An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

San Francisco's newly reopened hands-on science museum.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Golden Gate Park's historic collection of plants.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A century and a half of research in the sciences and natural history, still going strong.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

The timepiece that exonerated a labor radical accused of a parade bombing that killed ten people.

The oldest Naval cemetery on the West Coast.

The former Naval shipyard is open for exploring - mostly.

The largest drain hole in the world.

Eclectic collection of dark and macabre antiques.

Dentist's hated concrete colossi are now beloved icons of the community.

Seven ceramic sculptures are scattered around this California college campus.

Special tunnels built so that frogs won't be killed when crossing the highway.

I Street Bridge is the heaviest swinging center bridge in the United States.